Darn, it's out of stock
(for now)
Galaxy S21 Ultra 5G 128GB - Silver - Unlocked

Galaxy S21 Ultra 5G 128GB - Silver - Unlocked

is currently unavailable.

Galaxy S21 Ultra 5G 128GB - Silver - Unlocked's customer reviews

4.2/5

341 verified reviews in the last 12 months.

  • M

    Michael t W.

    Purchased on September 11, 2024

    5/5

    This is my fourth phone Ive gotten from backmarket!! WHY? Because searching the net up and down ..Backmarket alwasy seemed tpo have the best deal.One big reason is the first two had clear new screens and the phone was refurbished.This time i got a galaxy s21..It is brand new looking..Super good phone.Super happy-PEACE

    Reviewed in the United States on December 9, 2024

  • G

    Geraldine M.

    Purchased on January 23, 2025

    4.1/5

    The Galaxy S21 Ultra 5G 128G Black is a nice phone. It had one slight scratch although the description said Excellent Condition with no visible marks. Both phones had visible marks. We liked the phone in spite of this.

    Reviewed in the United States on February 10, 2025

  • G

    Gerald P.

    Purchased on March 10, 2024

    4.5/5

    Trading in my beat-up S21Ultra with damaged screen for this excellent condition replacement enabled me to, in turn, take advantage of trade-in promotion at Samsung Store. My old phone was worthless for trade-in otherwise. The refurbisher who purchased my trade-in tried to claim that it didn't take a charge... but with my photos in hand, the Backmarket staff swiftly dealt with that. Be sure to take photos of live phone, and of each stage of packaging, so that Backmarket is able to support you in case of dispute. Great customer service!

    Reviewed in the United States on December 9, 2024

  • S

    Shawn N.

    Purchased on May 20, 2024

    4.6/5

    The phone is amazing and just as I expected. It did have a small scratch on the front that is deep enough to see when the phone isn't on when I ordered the excellent version, but other than that it's great!! I would definitely recommend it to anyone looking to buy refurbished!

    Reviewed in the United States on December 9, 2024

  • G

    Gene B.

    Purchased on February 29, 2024

    5/5

    the whole experience was seamless and great! couldn't have asked for a better experience. I purchased S21 Ultra 256gb Unlocked. while I was hesitant about buying a refurbished device, then my device showed up and all the hesitance went right away! will purchase from again !

    Reviewed in the United States on December 9, 2024

  • K

    Kyle M.

    Purchased on May 27, 2024

    4.6/5

    There was a scratch on the back by the camera, I give the quality of this refurbished device 4.5/5 stars. Everything else 💪 appears to be in good working order. This is a great phone for the price. The ultra that is. 12gb ram...super fast 🏃‍♂️

    Reviewed in the United States on December 9, 2024

  • L

    La mar R.

    Purchased on June 29, 2024

    4.8/5

    Love the phone, and the seller is A+++!! Thank you so much Note: phone is refurbished, and won't seem to connect to 5G. Not sure if that was the previous issue, but 4GLTE is just as good. Love this phone!

    Reviewed in the United States on December 9, 2024

See all 341 reviews

Reborn vs. brand new

Here’s what you help prevent on average by choosing a reborn smartphone over a brand new one.

171.1 lbs of CO2e

That's like driving an SUV from NYC to Chicago.

6.3 oz of e-waste

That’s around the weight of a baseball.

537.1 lbs of raw materials

That's like 20 dogs digging in your yard for a week.

20,341.2 gallons of water

That's like running a faucet for 3 days

Everything you ever wanted to know about the Galaxy S21 Ultra 5G 128GB - Silver - Unlocked

  • SilverColor

  • 6.8Screen size (inches)

  • Galaxy S21 Ultra 5GModel

  • AndroidOS

  • 1440 x 3200Resolution

  • UnlockedCarrier compatibility

  • 128 GBStorage

  • 12 GBMemory

  • Dynamic AMOLED 2XScreen type

  • Pro Grade Camera: Zoom in close, take photos and videos like a pro, and capture incredible share-ready moments with our easy-to-use, multi lens camera

  • Sharp 8K Video: Capture your life’s best moments in head-turning, super-smooth 8K video that gives your movies that cinema-style quality Multiple Ways to Record: Create share-ready videos and GIFs on the spot with multi-cam recording and automatic professional-style effects

  • 100x Zoom: Get amazing clarity with a dual lens combo of 3x and 10x optical zoom, or go even further with our revolutionary 100x Space Zoom Highest Smartphone Resolution: Crystal clear 108MP allows you to pinch, crop and zoom in on your photos to see tiny, unexpected details, while lightning-fast Laser Focus keeps your focal point clear.

International GSM only, international dual sim

Galaxy S21 Ultra 5G 128GB - Silver - Unlocked
ColorSilver
Screen size (inches)6.8
ModelGalaxy S21 Ultra 5G
OSAndroid
Resolution1440 x 3200
Carrier compatibilityUnlocked
Storage128 GB
Memory12 GB
Screen typeDynamic AMOLED 2X
Network5G
Manufacturer Ref.SM-G998U1
Memory Card SlotNo
Verizon compatibleYes
AT&T compatibleYes
T-Mobile compatibleYes
Release Year2021
Last OS CompatibilityYes
FoldableNo
Front camera40 megapixels
SAR head0.77
SAR body1.02
SeriesSamsung Galaxy S
SIM cardDual Physical SIM + eSIM
Retro techNo
Main camera108 megapixels
Color (official name)Phantom Silver
matching_keyGalaxy S21 Ultra 5G Phantom Silver 128 12 Dual Physical SIM + eSIM Unlocked
Company nameSamsung Electronics
Company email addresssupport@samsung.com
Company postal addressSamsung House, 1000 Hillswood Drive, Chertsey, Surrey, KT16 0PS, UK
BrandSamsung
Weight8 oz

Welcome to Back Market

The best prices for high-quality reborn tech by sellers we’ve checked and vetted. We don’t mind if you Google us.

Get to know us
  • 1-year warranty
  • Free standard shipping
  • Free 30-day returns
  • Friendly customer service
1 / 3.